Comparison of GALAX GeForce GTX 1080 EX OC V2 video card vs Sapphire Radeon RX 6600 video card by specifications and benchmarks. GALAX GeForce GTX 1080 EX OC V2 runs at 1.620 GHz+ 1 % base clock speed and has 8 GB of GDDR5X memory, while video card Sapphire Radeon RX 6600 runs at 1.626 GHz base clock speed and has 8 GB of GDDR6 memory. The TDP of the first video card is 180 W, and the second is 132 W. Compare the table of benchmark results to find out which graphic card is better.